Material: Our Re-New Ribbed fabric is made from upcycled materials. We’ve crafted a rich, natural wide-rib with just the right amount of stretch to flatter all figures. Not only does it look sleek, but it keeps you cozy at the same time. It’s 49% organic cotton, 20% recycled cotton, 18% recycled polyester, 10% tencel, and 3% elastane. To maintain the Re-New Ribbed fabric, we recommend machine-washing cold on a gentle cycle and laying flat to dry.